Ignore docs folder #3454

Job	Run time
lint	16s
ruby-versions / Generate Ruby versions	2s
rake test 2.7 (latest reline)	1m 14s
vterm-yamatanooroti 2.7 (latest reline)	1m 4s
rake test 2.7	1m 18s
vterm-yamatanooroti 2.7	1m 10s
rake test 3.0 (latest reline)	1m 11s
vterm-yamatanooroti 3.0 (latest reline)	53s
rake test 3.0	1m 14s
vterm-yamatanooroti 3.0	1m 1s
vterm-yamatanooroti 3.1 (latest reline)	1m 1s
rake test 3.1 (latest reline)	1m 17s
vterm-yamatanooroti 3.1	1m 0s
rake test 3.1	1m 12s
vterm-yamatanooroti 3.2 (latest reline)	55s
vterm-yamatanooroti 3.2	56s
rake test 3.2 (latest reline)	1m 10s
vterm-yamatanooroti 3.3 (latest reline)	57s
rake test 3.2	1m 9s
vterm-yamatanooroti 3.3	52s
rake test 3.3 (latest reline)	1m 19s
vterm-yamatanooroti head (latest reline)	1m 1s
rake test 3.3	1m 8s
vterm-yamatanooroti head	59s
rake test head (latest reline)	1m 22s
rake test head	1m 22s
rake test truffleruby-head (latest reline)	2m 50s
rake test truffleruby-head	2m 48s
	32m 41s

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